Select All ListBox Items : ListBox Selection « Windows Presentation Foundation « VB.Net Tutorial

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VB.Net Tutorial » Windows Presentation Foundation » ListBox Selection 
16.30.10.Select All ListBox Items
<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="300" Width="300">
    <StackPanel>
        <ListBox FontSize="16" Height="150" Margin="5" Name="listBox1" SelectionMode="Extended">
            <ListBoxItem>List Item 1</ListBoxItem>
            <ListBoxItem>List Item 2</ListBoxItem>
            <ListBoxItem>List Item 3</ListBoxItem>
        </ListBox>
        <StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
            <Label Content="_New item text:" VerticalAlignment="Center" Target="{Binding ElementName=textBox}"  />
            <TextBox Margin="5" Name="textBox" MinWidth="120" />            
        </StackPanel>
        <StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
            <Button Click="btnAddListItem_Click" Content="Add Item" IsDefault="True" Margin="5" Name="btnAddListItem" />
            <Button Click="btnDeleteListItem_Click" Content="Delete Items" Margin="5" Name="btnDeleteListItem" />
            <Button Click="btnSelectAll_Click" Content="Select All" Margin="5" Name="btnSelectAll" />
        </StackPanel>
    </StackPanel>
</Window>
//File:Window.xaml.vb
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub btnAddListItem_Click(sender As Object, e As RoutedEventArgs)
      If textBox.Text.Length = Then
        MessageBox.Show("Enter text to add to the list.", Title)
      Else
        Dim item As New ListBoxItem()
        item.Content = textBox.Text
        item.IsSelected = True
        item.HorizontalAlignment = HorizontalAlignment.Center
        item.FontWeight = FontWeights.Bold
        item.FontFamily = New FontFamily("Tahoma")

        listBox1.Items.Add(item)

        textBox.Clear()
        textBox.Focus()
      End If
    End Sub

    Private Sub btnDeleteListItem_Click(sender As Object, e As RoutedEventArgs)
      If listBox1.SelectedItems.Count = Then
        MessageBox.Show("Select list items to delete.", Title)
      Else
        While listBox1.SelectedItems.Count > 0
          listBox1.Items.Remove(listBox1.SelectedItems(0))
        End While
      End If
    End Sub
    Private Sub btnSelectAll_Click(sender As Object, e As RoutedEventArgs)
      listBox1.SelectAll()
    End Sub
  End Class
End Namespace
WPF Select All List Box Items
16.30.ListBox Selection
16.30.1.Set selected index for ListBoxSet selected index for ListBox
16.30.2.ListBox Selected Index, Item, ValueListBox Selected Index, Item, Value
16.30.3.ListBox and SelectionModeListBox and SelectionMode
16.30.4.Get selected item from ListBoxGet selected item from ListBox
16.30.5.Get selected item count from ListboxGet selected item count from Listbox
16.30.6.View and Select Items Using a ListView and Select Items Using a List
16.30.7.Set text to TextBlock for selected list itemSet text to TextBlock for selected list item
16.30.8.Select All and unselect allSelect All and unselect all
16.30.9.Get Selected Item from ListBox 2Get Selected Item from ListBox 2
16.30.10.Select All ListBox ItemsSelect All ListBox Items
16.30.11.This list box allows multiple user selections.This list box allows multiple user selections.
16.30.12.ListBox SelectionMode=SingleListBox SelectionMode=Single
16.30.13.ListBox selection changed eventListBox selection changed event
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